JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You may remove the payment field from the JotForm and change it to Purchase order field. Please make sure that you choose to keep the products after removing the PayPal field from the form so that the same products can be added automatically when you add Purchase order field.
You may display the bank account details on the form using a text field to let the user to deposit the amount.
Hope this information helps! Let us know if you are referring something different. We will be happy to help.